yo me abstenía
I used to abstain / I was abstaining
tú te abstenías
you used to abstain / you were abstaining
él se abstenía
he used to abstain / he was abstaining
nosotros nos absteníamos
we used to abstain / we were abstaining
vosotros os absteníais
you used to abstain / you were abstaining
ellos se abstenían
they used to abstain / they were abstaining